Is it possible to overlay multiple JSliders so I can see the "thumbs" on both (I've tried disabling the painting of the track and setting opacity to false but one still hides the other)? Basically I'd like to create a component that allows the user to define a range (and I didn't really want to write a custom one since it has most of the attributes of a slider). If there is another way I could do that with a slider, that would work too.
thanks,
Jeff
Ah, I found it (i must not have been seraching on the right terms). Swing labs as a JXMultiThumbSlider that I think will do the trick.
http://swinglabs.org/hudson/job/SwingX%20Weekly%20Build/javadoc/org/jdesktop/swingx/JXMultiThumbSlider.html
I recently had the same problem, I wanted a slider with two thumbs. I didn't get into it too much, and what I ended up doing to get the range is simply putting two sliders and in the "onSliderChange" event listener prevented one beeing smaller than the other and the other bigger than the one. I don't beleive Swing has a two-thumb-Slider, although it might be a cool new feature to add, so I think this is your best bet.
JIDE has a RangeSlider with 2 thumbs (and a nice extra one on top to move both thumbs at once (e.g. drag the range around) in their open source common layer: http://www.jidesoft.com/products/oss.htm
Related
I'm currently developing an android app and I'm just wondering if there is a way to move the elements around on the graphical view without moving other elements around.
It's really a pain to get everything lined up the way I want it when moving one edittext moves 3 others too.
Thanks all!
This will depend on what your layout is so the simple answer is no. With certain layouts and attributes it might work but everything kind of depends on everything else.
If you're using a RelativeLayout then a View will be positioned relative to certain other views so this will cause problems.
If it's a LinearLayout then moving one to the top is going to move other things.
Solution
Do yourself a favor, learn to design them in the xml and don't use the graphical editor to place the Views/ViewGroups. I use the graphical tab only for checking how it looks. Using xml is easier and more flexible, IMHO
I am looking for slide bars with two knobs for a user to move them separately or both together, similar to the one in the picture to use in Java. Any sidebar with two knobs (two indicators) would do. Does it exist?
That's called a range slider. Here it is discussed in another thread:
Range Slider in Java
Also, here's an API which provides a JRangeSlider swing object:
http://prefuse.org/doc/api/prefuse/util/ui/JRangeSlider.html
I've never used it, but it looks like just what you want.
i would suggest checking out JIDE (open source components), i know for a fact there is a range slider with two knobs
Sorry for late answer:)
I recently implemented JRangeSlider without custom painting code, thus it will always look like normal JSlider, but with two knobs.
https://github.com/andronix3/SwingHacks/blob/master/com/smartg/swing/JRangeSlider.java
As a way of learning Java, I'm writing this little application for grade schoolers to practice basic math. The idea is that the kid does any number of math problems, as long as they are in the app, it just continues to throw problems at them until they click a 'Done' button. When they decide to be done, I want a new JFrame to come up that will show them all of the problems they attempted, along with their answer, and whether they got the problem right or wrong.
The advice that I am looking for is what is the best way for me present these results. I looked into the GridLayout and the GroupLayout, but I don't think that these are exactly right. I did something similar in VBA for Excel, and there I just ran a for loop with one iteration for every problem they attempted. Each iteration would add a row of labels to the frame with the elements of the problem displayed in the various labels. I tried this in Java, but I'm not even able to get the labels to even display.
So before I get all specific and start posting my code, I want to ask a bigger question, which is "what is the best method to create a view like this?" Often, I go off in one direction only to waste time before somebody suggests a totally different (and better) approach.
Thanks!
(edit: here's an image of how I did this in Excel. I'm trying to repeat basically the same thing in Java)
One simple way to make that design would be to use a mix of components. You could have a bunch of JLabels and JPanels stacked in a vertical FlowLayout. The grid you have described would be best designed in a JTable, something like the below:
If you like tables like Excel then, Java provides JTable class to create tables, if you want.
Tutorial : http://docs.oracle.com/javase/tutorial/uiswing/components/table.html
I am using list-field in a BlackBerry application. In each list-field item, I have a bitmap-field at the left, text at center and again a bitmap-field at the right.
Can I determine whether the fields are focusable inside the list-field rows for keypad versions of BlackBerry Devices for e.g BlackBery Tour?
No in list field no control except whole row is focusable explicitly. If you want to perform any click events you can use touchEvent() but the calculation will be too complex and not so reliable.
If you want to have separate clickable items in one row you must use HorizontalFieldManager each time.
Update: : I have come across this scenario twice, and if I were in place of you I will consider what exactly the feature is about, If you are concerned about UI and there is not any heavy functionality behind focusing you can try touchEvent or navigationClick but using both will be cumbersome. Too much logic, too much thinking, hard to test.
If there is any functionality, you have an option to add them on menu, It will be more convenient way than using horizontal field manager or the above mentioned methods.
I will explain my question clearly.
I need to zoom in/zoom out the world map.
When I click on the particular country in map, control should redirected to new page with respective the country.
I dont have any idea about this in java. Please explain the steps to acheive the above task.
As the question is quite general, here is a general answer: Zooming often means, that you want to display a certain percentage of somethin, and not the whole, where your size of the displayed will not change.
But in your case it seems more like a "find a mouse click in a polygon" thing. So you have to add a selection/click listener to whatever widgets you use (Swt? swing? ....?) where you change what your program renders.
It sounds like you may be trying to reinvent the wheel. Google etc have already solved this problem rather well. It might be better to incorporate an existing solution into your application. Have a look at GoogleEarth inside Java Swing.